################################################################################
#
# Specify standard environmental variables. These can be either actual
# shell environment variables, or make variables.
#
################################################################################


################################################################################
#
# Various environment variables.
#
# Set DRAFT to "draft" to run LaTeX in draft mode (i.e., make DRAFT=draft xxx).
#
DRAFT=
#
# Set PAPER_SIZE to an appropriate LaTeX value to change the paper size
# (e.g., make PAPER_SIZE=letterpaper xxx).
#
ifndef PAPER_SIZE
PAPER_SIZE=a4paper
endif
#
# Set FONT_SIZE to an appropriate LaTeX value to change the font size
# (e.g., make FONT_SIZE=10pt xxx).
#
ifndef FONT_SIZE
FONT_SIZE=12pt
endif
#
# Specify LaTeX document options (comma-separated list).
# We need to add a comma if there is something there already!
#
ifdef LATEX_OPTS
LATEX_OPTS+=,
endif
LATEX_OPTS+=$(FONT_SIZE),$(PAPER_SIZE),$(DRAFT)

# LaTeX doesn't like white space in document class options (it basically stops
# when it hits the first occurrence), so we need to strip these out. Unfortunately
# this is (as many things) inordinately difficult to do within make, so let's
# just drop out to the shell and use tr. Note use of := to avoid recursive
# expansion.
LATEX_OPTS:=$(shell echo "$(LATEX_OPTS)" | tr -d ' ')

#
# List of standard "phony" build targets.
#
TARGETS+=all debug test clean tidy targets